Hot-air furnace.



No. 873,449., PATENTED DEG. 10, 1907.

' A. G. MOTT.

HOT AIR FURNACE. APPLICATION FILED MAY 2 s, 1905.

2 SHEETS-SHEET 1.

THE NORRIS PETERS cm, WASHINGTON, n. c. v

No. 873,449. PATENTED DEC. 10, 1907.

A. 0. MOTT. -HOT AIR FURNACE.

- APPLICATION I'ILED- MAY 26. 1110s.

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. ABRAM O. MOTT, OF PHILADELPHIA, PENNSYLVANIA.

HOT-AIR FURNACE Specification of Letters Patent.

Patented Dec. 10, 1907.

Application filed May 26.1905. Serial No. 262.444.

To all whom it may concern.

Be it known that I, ABRAM C. MOTT, a citizenof the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Hot-Air Furnaces, of which the following is aspecification.

The object of my invention is to provide ais a view in elevationillustrating my improved hot air furnace, the casing being in section;Fig. 2, is a vertical sectional View on'the line 2-2, Fig. on the line33, Fig. 1; and Fig. 4, is a detached view of one of the partitions.

A is the base of the furnace, B is the outer shell'made in any numberofsections desired, B, in the present instance, is the cast metal frontplate on which is hung the ash pit door b, the fire door I) and the drumdoor 6 C is the top of the furnace having the openings c for the escapeof hot air from the furnace. The top plate is flanged so that the hotair conducting pipes D can be properly attached.

It will be noticed, in the drawings, refer- V ring to Figs. 1 and 3,that the conducting pipes D are of different diameters, the object beingto more evenly distribute the heat throughout a building, this is doneby calculating the number of square feet in the different rooms and thenconnecting the heater with the rooms in such a manner that the largesupply pipes will communicate with the larger rooms and the smallerpipes with those of less area. I

E is the fire pot of the furnace, E is the ash pipe and E is thecombustion chamber.

F is the drum section mounted above the combustion chamber in anysuitable manner,

and this drum section consists of a central portion f directly above thefire and a ring f mounted midway between the outer casing B and thecentral portionf, so as to form two passage-ways a and a for the air tobe heated, one passage-way between the outer casing and the ring f andthe other passage-way between the ring portion f and the central portionf.

3; Fig. 3, is a sectional plan view- Heretofore in this typeof furnace,parti tions were not used, the air would simplypass up through the airspaces and out one or more of the conducting pipes D, according to thearrangement of the dampers in the pipes, but in many cases some of thepipes would receive more hot air than others and the rooms-would not beevenly heated.

By my invention, I need not necessarily alter the construction of thefurnace, but simply add vertical partition plates I which extend fromthe base of the fire pot in the present instance to the top plate 0 ofthe furnace. These partition plates I are made in two pieces a, i, asclearly shown in Fig. 4. The piece '5 is slotted at i so as to pass overthe ring section f of the heating drum F and it is secured to the lowerpart i by a line of rivets or bolts as at The'lower part '1', is shapedto conform to the fire pot E and combustion chamber E It is rigidly heldfrom vertical movement but is free to be adjusted laterally to anyposition, so that when the furnace is assembled any number of parti--tions may be mounted in place, for instance,

eight partitions are shown and these partitions can be adjusted by thefurnace man after the area of each room is taken, so that the largeconducting pipes which communicate with the large rooms will communicatewith a larger heating space than those communicating with small rooms,and this is done by shifting the partitions, as for instance asindicated in Fig. 3.

The partition plates I are shown as terminating at the base of the firepot but in some instances, they may terminate either above or below thispoint without departing from my invention.

By my invention I am enabled to construct furnaces of this type in largenumbers and the partitions can be readily shifted by the man who placesthe furnace in position without having to design 'a furnace for eachparticular bullding.

My invention can also be ap lied to furnaces now in existence by simp yproviding the vertical partitions, as shown in Fig. 4, al-

lowing the furnace man to apply the partitions as desired.

I claim as my invention: The combination in a hot air furnace, of anouter casing, a fire ot, a combustion -cham-' ber and a heating rum allmounted within the outer casing, said heating drum having a through ringsection forming t'Wo passage-Ways for the air to be heated, a series ofvertical partitions extending from the base of the fire pot to the topof the outer casing, each vertical partition being made in two parts,the upper part being slotted so as to pass over the ring section of theheating drum, the lower part being shaped to fit the fire pot andcombustion chamber and secured to the upper part,

10 the casing having flue openings connected to AB RAM C. MO'lT.

Witnesses:

WM. BROWN, J12, WILL. A. BARR.

